It's not about the subject, it's about the the message header, which is
what the forum software uses to sort messages. I had to be corrected by
Tim on this very subject once.
----- Original Message -----
From: "Charlie Markwick" <charlie-markwick(a)southcot.com>
To: "MediaWiki announcements and site admin list"
<mediawiki-l(a)lists.wikimedia.org>
Date: Fri, 21 Jan 2011 07:41:46 -0000
Subject: Re: [Mediawiki-l] External Link Opening in New Tab or Window
Katharina
Possibly. How would one know it was doing that unless one visited the
archive? It comes through with the subject correct.